<template>
  <div>
    <div style="margin-bottom: 30px">
      <el-breadcrumb separator="/">
        <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>管理员列表</el-breadcrumb-item>
      </el-breadcrumb>
    </div>

    <div style="margin: 10px 0">
      <el-input style="width: 200px" placeholder="请输入用户名"
                v-model="username" suffix-icon="el-icon-search"></el-input>
      <el-input style="width: 200px" placeholder="请输入密码"
                v-model="password" suffix-icon="el-icon-lock" class="ml-5"></el-input>
      <el-button class="ml-5" type="primary" @click="search">搜索</el-button>
      <el-button class="ml-5" type="warning" @click="reset">重置</el-button>
    </div>

    <div style="margin: 10px 0">
      <el-button type="primary" @click="handleAdd" class="mr-5">新增 <i class="el-icon-circle-plus-outline"></i>
      </el-button>
      <el-popconfirm
          confirm-button-text='确定'
          cancel-button-text='再想想'
          icon="el-icon-info"
          icon-color="red"
          title="确定批量删除吗？"
          @confirm="delBatch">
        <el-button type="danger" slot="reference" class="mr-5">批量删除 <i class="el-icon-remove-outline"></i></el-button>
      </el-popconfirm>
      <el-button type="primary">导入 <i class="el-icon-bottom"></i></el-button>
      <el-button type="primary">导出 <i class="el-icon-top"></i></el-button>
    </div>
    <el-table :data="tableData.slice(startIndex,startIndex+pageSize)" border stripe
              @selection-change="handleSelectionChange">
      <el-table-column
          type="selection"
          width="55">
      </el-table-column>
      <el-table-column prop="aid" label="id" width="140">
      </el-table-column>
      <el-table-column prop="username" label="用户名" width="120">
      </el-table-column>
      <el-table-column label="操作" width="500px" align="center">
        <template slot-scope="scope">
          <el-button type="success" @click="handleEdit(scope.row)" class="mr-5">
            编辑<i class="el-icon-edit"></i>
          </el-button>
          <el-popconfirm
              confirm-button-text='确定'
              cancel-button-text='再想想'
              icon="el-icon-info"
              icon-color="red"
              title="确定删除吗？"
              @confirm="del(scope.row.aid)">
            <el-button type="danger" slot="reference">删除 <i class="el-icon-remove-outline"></i></el-button>
          </el-popconfirm>
        </template>
      </el-table-column>
    </el-table>
    <div style="padding: 10px 0">
      <el-pagination
          @size-change="handleSizeChange"
          @current-change="handleCurrentChange"
          :page-sizes="[5, 10, 15, 20]"
          :page-size=pageSize
          layout="total, sizes, prev, pager, next, jumper"
          :total=total>
      </el-pagination>
    </div>
    <!--    管理员信息的弹窗    -->
    <el-dialog title="管理员信息" :visible.sync="dialogFormVisible" width="30%">
      <el-form :model="admin" :rules="rules" ref="admin">
        <el-form-item label="用户名" label-width="100px" prop="username">
          <el-input v-model="admin.username" autocomplete="off"></el-input>
        </el-form-item>
        <el-form-item label="密码" label-width="100px" prop="password">
          <el-input v-model="admin.password" autocomplete="off" type="password"></el-input>
        </el-form-item>

      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button @click="dialogFormVisible=false">取 消</el-button>
        <el-button type="primary" @click="saveAdmin('admin')">{{ btnText }}</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
import request from "@/utils/request";

export default {
  name: 'Admin',
  data() {
    return {
      tableData: [],
      startIndex: 0,
      username: "",
      password: "",
      pageSize: 5,
      total: 0,
      dialogFormVisible: false,
      btnText: "",
      admin: {},
      multipleSelection: [],
      rules: {
        username: [
          {required: true, message: '请输入用户名', trigger: 'blur'},
          {min: 3, message: '长度在 3 个字符以上', trigger: 'blur'}
        ],
        password: [
          {required: true, message: '请输入密码', trigger: 'blur'},
          {min: 6, message: '长度在 6 个字符以上', trigger: 'blur'}
        ]
      },
    }
  },
  created() {
    this.load()
  },
  methods: {
    load() {
      request.get("/admin/findall").then(res => {
        this.tableData = res
        this.total = this.tableData.length
        this.startIndex = 0
      },(err=>{
        console.log("error !!!!!!!!!!!!!!!!!!")
      }))
    },
    handleSizeChange(pageSize) {
      this.pageSize = pageSize
    },
    handleCurrentChange(pageNum) {
      this.startIndex = (pageNum - 1) * this.pageSize
    },
    handleAdd() {
      this.btnText = "添加"
      this.admin = {}
      this.dialogFormVisible = true
    },
    handleEdit(row) {
      this.btnText = "修改"
      this.dialogFormVisible = true
      this.admin = Object.assign({}, row)
      console.log(this.admin)
    },
    saveAdmin(admin) {
      this.$refs[admin].validate((valid) => {
        if (valid) {
          this.dialogFormVisible = false
          request.post("admin/save", this.admin).then(res => {
            if (res) {
              this.$message.success(this.btnText + "成功")
              this.load()
            } else {
              this.$message.error(this.btnText + "失败")
            }
          })
        } else {
          console.log('error submit!!');
          return false;
        }
      });
    },
    del(id) {
      request.post("admin/delete", id).then(res => {
        if (res) {
          this.$message.success("删除成功")
          this.load()
        } else {
          this.$message.error("删除失败")
        }
      })
      console.log(id)
    },
    handleSelectionChange(val) {
      // console.log(val)
      this.multipleSelection = val
    },
    delBatch() {
      //map函数：数组的每个元素都执行一个给定的函数，返回值仍为一个数组
      let ids = this.multipleSelection.map(v => v.aid)
      if (ids.length !== 0) {
        request.post("admin/deleltebatch", ids).then(res => {
          if (res) {
            this.$message.success("批量删除成功")
            this.load()
          } else {
            this.$message.error("批量删除失败")
          }
        })
      } else {
        this.$message.warning("请选择要删除的数据")
      }
    },
    search() {
      request.get("/admin/selectbycondition", {
        params: {
          username: this.username,
          password: this.password,
        }
      }).then(res => {
        this.tableData = res
        this.total = this.tableData.length
        this.startIndex = 0
      })
    },
    reset() {
      this.username = ""
      this.password = ""
      this.load()
    }
  }
}
</script>

<style scoped>

</style>